Universal Steel Access Doors are made of 18-gauge steel with white baked enamel prime coat (paintable). Suitable for a wide range of plumbing, utility and other applications. Can be installed over drywall, tile, masonry or any other flush surfaces. Comes with a screwdriver operated cam-latch lock and swings open to about 120 degrees (2/3). Sizes denote access door size (without frame), to calculate minimal opening - add 3/8”.